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2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24
25 // MARKER(update_precomp.py): autogen include statement, do not remove
26 #include "precompiled_sal.hxx"
27 // autogenerated file with codegen.pl
28
29 #include "gtest/gtest.h"
30 #include <rtl/crc.h>
31
32 namespace rtl_CRC32
33 {
34
35 class test : public ::testing::Test
36 {
37 public:
38 // initialise your test code values here.
SetUp()39 void SetUp()
40 {
41 }
42
TearDown()43 void TearDown()
44 {
45 }
46 }; // class test
47
TEST_F(test,rtl_crc32_001)48 TEST_F(test, rtl_crc32_001)
49 {
50 sal_uInt32 nCRC = 0;
51
52 char buf[] = {0};
53 int num = 0;
54
55 nCRC = rtl_crc32(nCRC, buf, num);
56
57 ASSERT_TRUE(nCRC == 0) << "empty crc buffer";
58 }
59
TEST_F(test,rtl_crc32_002)60 TEST_F(test, rtl_crc32_002)
61 {
62 sal_uInt32 nCRC = 0;
63
64 char buf[] = {0,0};
65 int num = sizeof(buf);
66
67 nCRC = rtl_crc32(nCRC, buf, num);
68
69 ASSERT_TRUE(nCRC != 0) << "buffer contain 2 empty bytes, crc is zero";
70 }
71
TEST_F(test,rtl_crc32_002_1)72 TEST_F(test, rtl_crc32_002_1)
73 {
74 sal_uInt32 nCRC = 0;
75
76 char buf[] = {0,0,0};
77 int num = sizeof(buf);
78
79 nCRC = rtl_crc32(nCRC, buf, num);
80
81 ASSERT_TRUE(nCRC != 0) << "buffer contain 3 empty bytes, crc is zero";
82 }
83
84 /**
85 * crc32 check:
86 * Build checksum on two buffers with same size but different content,
87 * the result (crc32 checksum) must differ
88 */
89
TEST_F(test,rtl_crc32_003)90 TEST_F(test, rtl_crc32_003)
91 {
92 sal_uInt32 nCRC1 = 0;
93 char buf1[] = {2};
94 int num1 = sizeof(buf1);
95
96 nCRC1 = rtl_crc32(nCRC1, buf1, num1);
97
98 sal_uInt32 nCRC2 = 0;
99 char buf2[] = {3};
100 int num2 = sizeof(buf2);
101
102 nCRC2 = rtl_crc32(nCRC2, buf2, num2);
103
104 ASSERT_TRUE(nCRC1 != nCRC2) << "checksum should differ for buf1 and buf2";
105 }
106
107 /** check if the crc32 only use as much values, as given
108 *
109 */
TEST_F(test,rtl_crc32_003_1)110 TEST_F(test, rtl_crc32_003_1)
111 {
112 sal_uInt32 nCRC1 = 0;
113 char buf1[] = {2,1};
114 int num1 = sizeof(buf1) - 1;
115
116 nCRC1 = rtl_crc32(nCRC1, buf1, num1);
117
118 sal_uInt32 nCRC2 = 0;
119 char buf2[] = {2,2};
120 int num2 = sizeof(buf2) - 1;
121
122 nCRC2 = rtl_crc32(nCRC2, buf2, num2);
123
124 ASSERT_TRUE(nCRC1 == nCRC2) << "checksum leave it's bounds";
125 }
126
127 /** check if the crc32 differ at same content in reverse order
128 *
129 */
TEST_F(test,rtl_crc32_003_2)130 TEST_F(test, rtl_crc32_003_2)
131 {
132 sal_uInt32 nCRC1 = 0;
133 char buf1[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
134 int num1 = sizeof(buf1);
135
136 nCRC1 = rtl_crc32(nCRC1, buf1, num1);
137
138 sal_uInt32 nCRC2 = 0;
139 char buf2[] = {20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
140 int num2 = sizeof(buf2);
141
142 nCRC2 = rtl_crc32(nCRC2, buf2, num2);
143
144 ASSERT_TRUE(nCRC1 != nCRC2) << "checksum should differ";
145 }
146
147 // -----------------------------------------------------------------------------
148 } // namespace rtl_CRC32
149
main(int argc,char ** argv)150 int main(int argc, char **argv)
151 {
152 ::testing::InitGoogleTest(&argc, argv);
153 return RUN_ALL_TESTS();
154 }
155